Refrigerator



F. L DAHLKE. REFRIGERATOR.

APPLICATION FILED APR-22, I920.

Patented Mar. 8, 1921.

UNITED STATES EATENT OFFICE.

FREDRIGK J. DAHLKE, OF DAMASCUS, OHIO.

REFRIGERATOR.

Original application filed June 4, 1919, Serial No. 301,831. Divided andthis 1920. Serial No. 375,797.

To all whom it may concern:

Be it known that I, F 1112011101; J. DAHLKE, a citizen of the UnitedStates, residing at Damascus, in the county of Columbiana and State ofOhio, have invented a new and useful Refrigerator, of which thefollowing is a specification.

This invention relates to refrigerators, and has more'especial referenceto that type of refrigerators which do not require ice and in which theprovision receptacle is arranged to be cooled by being lowered into ashaft and to be raised from the shaft when access to its contents isdesired.

This application is a division of my application, Serial No. 301,831,filed June 4, 1919, which application has matured into Patent No.1,349,369 dated August 10, 1920.

The objects of the present invention are to provide a provisionreceptacle which may be lowered into and raised from a shaftlocated'beneath the floor, to provide a water jacket around the shaftfor cooling the interior of the shaft to provide means for circulatingwater through the jacket, to maintain the temperature of the shaft atthe desired point, to maintain the interior of the shaft dry and clean;and to generally improve and simplify the construction of this type ofrefrigerator.

Vith these objects in view the invention consists in the novelconstruction and arrangement of parts, hereinafter described,illustrated in the accompanying drawings, and particularly pointed outin the appended claims, it being understood that various changes in theform, proportions, size and minor details of construction may be madewithin the scope of the appended claims, without departing from thespirit or sacriticing any of the advantages of the invention.

The invention thus set forth in general terms is illustrated in theaccompanying drawings forming part hereof, in which- Figure l is avertical transverse sectional view through the device; and

2, a horizontal sectional view through the shaft.

A practical embodiment of the invention is disclosed in the accompanyingdrawings, forming a part of this specification in which similar numeralsof reference indicate corresponding parts throughout the several views.

Referring more especially to the construction illustrated in theaccompanying draw- Specification of Letters Patent.

Patented Mar. 8, 1921.

application filed April 22,

ings, the floor is indicated by the numeral 1, the shaft 2 being shownextending down from the floor to a suitable depth and provided with awater jacket 3, radial walls 4: being located at intervals between theshaft and the water jacket for the purpose of bracing the structure,these Walls being provided with apertures 5 to allow the water tocirculate through all of the compartments 6 thus formed.

It should be noted that one compartment 7 does not communicate with theadjoining compartments, but communicates with the lower extremity of theshaft by means of the aperture 8, a similar aperture 9 being formed inthe outer wall of this compartment adjacent the floor. A screen 10 isplaced over the aperture 9 for the purpose of preventing dirt or insectsfrom entering the shaft. Air is thus admitted into the interior of theshaft from the outside and as the provision receptacle is lowered intothe shaft the air displaced will be forced out through the compartment7.

The shaft is located beneath the aperture 11 formed in the floor whichaperture is closed in any suitable manner as shown and described in myco-pending application above referred to. V V

The shaft is built of any suitable material preferably of concretetiles. For the purpose ofadmitting water to the jacket, a pipe 13communicates with one of the compartments 6, said pipe leading to asuitable source of water supply either a pump, cistern or the like. Anoutlet pipe 1 1 communicates with one of the compartments 6, preferablyupon the opposite side of the water jacket. It will be seen thatthewater within the water jacket may be changed as often as desired, freshwater being admitted through the pipe 13 and allowed to circulate aroundthe jacket, the stale water overflowing I through the pipe 14, whichpipe leads to a suitable drain. The temperature of the interior of theshaft may thus be maintained at the desired point while the interior ofthe shaft remains dry.

The provision receptacle is mounted for vertical movement upon the track15, which track is mounted within the shaft and extends up through theopening in the floor for a sufficient distance to allow the provisionreceptacle to be moved out of the shaft and above the floor level.

' tacle and preventing odors of food in one upper end of the receptacle.

her comcompartment from passing to the ot partments.

j The receptacle is mounted upon a bracket "21, said bracket beingprovided with a pair of rollers 22 having annular flanges 23, whichengage opposite sides of the track 15, thus preventing lateral movementof the receptatcle with reference to the track. A similar pair ofpulleys22 is mounted at the v For the purpose of raising and lowering theprovision receptatcle within the shaft a drum 26' is mounted within thewall 27, a cable 28 being wound around said drum and connected to thebracket 21 which carries the receptacle, said cable being passed oversuitable pulleys '29. tremit-y of the cable extends downinto the Theother excompartment 7 and is provided with a counterweight 30 to balancethe weight of the refrigerator,

It will be seen that a refrigerator is thus provided which is notunsightly, as when the provision receptacle is lowered into the shaftand the trapdoor closed the only portions of the device appearing withinthe room are the upper portion of the track 15 which is located againstthe wall, and the crank 31: by means of which th'e drum is operated, Theshaft within which the receptacle is lowered is dry and at the same timeis maintained at the proper temperature by means of the water circulatedthrough the water jacket and the receptacle proper is so constructedthat each compartment is shut off from the remainder of the receptacle,thus making it possible to keep various kinds of food within thereceptacle without danger of their becoming contaminated with theyodorof other foods kept therein. 7'

Although the drawingsand above specification disclosethe best mode inwhich I have contemplated embodying my invcntion, I desire to be notlimited to the details of such disclosure, for, in the further practicalapplication of my invention, many changes in form and construction maybe made, as circumstances require or experience suggests, withoutdeparting from the spirit of the invention, within the scope of theappended claims.

I claim 1. A device of the character described comprising a shaft closedat its lower end, a jacket located around said shaft, an air compartmentformed in said jacket and communicating with the interior of the shaftand with the outside atmosphere, said air compartment being cut on fromthe remainder of the jacket, and means for circulating water through theremainderof the jacket, and a provision receptacle vertically slidablymounted within the shaft.

2. A device of the character described, comprising; a shaft closed atits lower enc, a jacket located around the shaft and divided intocompartments, one of said compartments being cut off from the remainderof the jacket and formin an air compartment and communicating with theinterior of the shaft and with the outside atmosphere, the remainingcompartments communicating with each' other. and means for circulatingwater through said remaining co1npartments and a provision receptacleverti cally slidably mounted within the shaft.

A device of the character described comprising a shaft closed at itslower end,

jacket surrounding said shaft, spaced radial walls connectingthe shaftand jacket and; forming compartments around the shaft, one of saidcompartments communicating with the interior of the shaft and with theoutside atmosphere, the remaining compartments communicating with eachother through spaced apertures formed in the radialwallsand means forcirculating water through said remaining compartments and a provisionreceptacle slidably mounted within the'shaft.

4. A device of the character described, comprising a shaft closed at itslower end, a jacket surrounding the shaft, a plurality of'compartmentsformed in said jacket, one of said compartments being cut off from theremaining compartments and communicating with the interior of the shaftand with the outside atmosphere, a provision receptacle slidably mountedwithin the shaft, a counterweight for the provision receptacle suspendedwithin said cut-off compartment, the remaining compartmentscommunicating with each other and means for circulating water throughsaid remaining compartments.

In testimony that I claim the above, I have hereunto subscribed my name,

FREDRICK J. DAHLKE.

